AOM and lock-in amplifier lidar-radar system for distance measurement

Lei Li; Suhui Yang; Xinpeng Sun; Lan Gao; Liping Tao; Changming Zhao

doi:10.1117/12.694444

10 June 2006 AOM and lock-in amplifier lidar-radar system for distance measurement

Lei Li, Suhui Yang, Xinpeng Sun, Lan Gao, Liping Tao, Changming Zhao

Author Affiliations +

Proceedings Volume 6344, Advanced Laser Technologies 2005; 63443A (2006) https://doi.org/10.1117/12.694444
Event: Advanced Laser Technologies 2005, 2005, Tianjin, China

Abstract

The lidar-radar architecture has been developed and used in detection and identification of targets in many domains. Based on the single frequency monothilic NPRO (Nonplanar Ring Oscillator) and AOM (Acousto-Optical Modulator), a lidar-radar conceptive system for distance measurement has been constructed and investigated. The system consists of mainly three parts: the beat frequency laser source made up of NPRO and AOM, the transmitting and reflection collecting system and the lock-in amplifier signal processing unit. Then the distance measurement has been demonstrated using a 700-meter long single-mode fiber. In order to calculate unambiguously the actual distance, two synthetic frequencies have been introduced in turn. At last, using the lidar-radar setup, the displacement and velocity of a moving target which is mounted on a precise motorized optical bench have been displayed.

Citation Download Citation

Lei Li, Suhui Yang, Xinpeng Sun, Lan Gao, Liping Tao, and Changming Zhao "AOM and lock-in amplifier lidar-radar system for distance measurement", Proc. SPIE 6344, Advanced Laser Technologies 2005, 63443A (10 June 2006); https://doi.org/10.1117/12.694444

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